@inproceedings{zhu-etal-2007-improving,
    title = "Improving Diversity in Ranking using Absorbing Random Walks",
    author = "Zhu, Xiaojin  and
      Goldberg, Andrew  and
      Van Gael, Jurgen  and
      Andrzejewski, David",
    editor = "Sidner, Candace  and
      Schultz, Tanja  and
      Stone, Matthew  and
      Zhai, ChengXiang",
    booktitle = "Human Language Technologies 2007: The Conference of the North {A}merican Chapter of the Association for Computational Linguistics; Proceedings of the Main Conference",
    month = apr,
    year = "2007",
    address = "Rochester, New York",
    publisher = "Association for Computational Linguistics",
    url = "https://preview.aclanthology.org/fix-sig-urls/N07-1013/",
    pages = "97--104"
}